Legal basis:
Article 23 of the Law of People's Republic of China (PRC) on the Protection of Consumers' Rights and Interests, an operator shall ensure the quality, performance, use and expiration date of the goods or services he provides under the normal use of the goods or services; However, consumers already know that there is a defect before buying goods or receiving services, except that the existence of the defect does not violate the mandatory provisions of the law. Where a business operator indicates the quality of goods or services by advertisements, product descriptions, physical samples or other means, it shall ensure that the actual quality of the goods or services it provides is consistent with the indicated quality. If consumers find defects in durable goods such as motor vehicles, computers, televisions, refrigerators, air conditioners, washing machines and other services provided by operators within six months from the date of accepting goods or services, and disputes arise, the operators shall bear the burden of proof for the defects.